What is the meaning of the following quote "if i have seen further it is by standing on the shoulders of giants"

Ill she not be here anon? is she not hurrying to upbraid me for my haste? have i not heard her footstep on the stair? do i not distinguish that heavy and horrible beating of her heart? what is the effect of parallelism in this excerpt? it emphasizes usher’s misunderstanding. it emphasizes usher’s love for his sister. it emphasizes usher’s psychological fixation. it emphasizes usher’s melancholy nature.

What is the author's purpose in both patrick henry's speech and thomas paines common sense

Identifying parts of a chemical equation identify each part of this chemical equation that describes the burning of methane and oxygen. b (blue box): d (number): e (purple box):